Liverpool's Europa League opponents FK Rabotnicki could face action if UEFA authorities are alerted to an incident of racist crowd behaviour.
Pictures have emerged from Liverpool's 2-0 over the Macedonian side in Skopje of supporters directing monkey taunts towards the English side's players.
Liverpool started the third qualifying round tie at the Philip II Stadium with two black players in their side in double goalscorer David Ngog and 19-year-old winger David Amoo.
Macedonian football has had a problem with racist behaviour in the past.
In September 2003, England players Emile Heskey, Sol Campbell and Ashley Cole were all the subject of abuse in an international against Macedonia at the same stadium.
An English flag was also burned and European governing body UEFA later fined the Football Federation of Macedonia £10,730.
